Check out the CZ's. I just bought my son a CZ 452 Scout and it is a NICE little youth model that many adults enjoy as well. Unlike many youth models, this one actually SHOOTS with remarkable accuracy. The sights are adjustable, but pretty basic, but do the job up to 50 yards or so. You can get one new for around $200. It weighs about 5 lbs, has a 12" LOP, 11mm dovetail for mounting optics if you so choose, 16 " barrel, and comes with a 5 round mag. There is also a single round and a 10 round mag available.
For about the same money, they also have several adult models as well. I think for the money, you can't beat the CZ's for a good, well made, tack driving accurate, .22.